Audio Codec with USB Interface, Mono ... - Texas Instruments
Audio Codec with USB Interface, Mono ... - Texas Instruments
Audio Codec with USB Interface, Mono ... - Texas Instruments
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PCM2912A<br />
SLES230–SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com<br />
<strong>USB</strong> INTERFACE<br />
GENERAL DESCRIPTION<br />
Control data and audio data are transferred to the PCM2912A via D+ (pin 4) and D– (pin 3). All data transferred<br />
to/from the PCM2912A are performed at full speed. Table 1 summarizes the device descriptor. The device<br />
descriptor can be modified on request.<br />
Table 1. Device Descriptor<br />
<strong>USB</strong> revision 2.0 compliant<br />
Device class 0x00 (device defined in interface level)<br />
Device sub class 0x00 (not specified)<br />
Device protocol 0x00 (not specified)<br />
Max packet size for endpoint 0 8-byte<br />
Vendor ID 0x08BB<br />
Product ID 0x2912<br />
Device release number 0x0100 (1.00)<br />
Number of configurations 1<br />
Vendor string String #1 (refer to Table 3)<br />
Product string String #2 (refer to Table 3)<br />
Serial number Not supported<br />
Table 2 lists the configuration descriptor. The configuration descriptor can be modified on request.<br />
<strong>Interface</strong> Three interfaces<br />
Table 2. Configuration Descriptor<br />
Power attribute 0x80 (Bus powered, no remote wakeup)<br />
Max power 0x32 (100 mA at POWER = Low) / 0xFA (500mA at POWER = High)<br />
Table 3 summarizes the string descriptor. The string descriptor can be modified on request.<br />
#0 0x0409<br />
Table 3. String Descriptor<br />
#1 Burr-Brown from TI<br />
#2 <strong>USB</strong> audio CODEC<br />
18 Submit Documentation Feedback Copyright © 2008, <strong>Texas</strong> <strong>Instruments</strong> Incorporated<br />
Product Folder Link(s): PCM2912A